Home / 31,447.08-43,407.63-19,517.40

Finding the Fourth Proportional to 31,447.08, 43,407.63 and 19,517.40

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Solution

The fourth proportional to 31,447.08, 43,407.63 and 19,517.40 is: 26,940.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,447.08 : 43,407.63 = 19,517.40 : x
  2. Step 2: Convert to fraction form
    31,447.08/43,407.63 = 19,517.40/x
  3. Step 3: Cross multiply
    31,447.08x = 43,407.63 × 19,517.40
  4. Step 4: Simplify right side
    31,447.08x = 847,204,077.76
  5. Step 5: Solve for x
    x = 847,204,077.76/31,447.08
  6. Step 6: Final answer
    x = 26,940.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.